Well Wildman (sign with your first name and I will use it!!)
I have used a couple "plastic bits" which may not be the ones you show, but they were very aggressive flutes. IF everything was held in place (drilling on the lathe with a collet chuck), things went well. But, if the blank could move (drill press) to climb up the bit, there were problems.
I agree with the others--get any bit, just get it sharp!!!
When you see ribbons coming from your drilled object, things will go well---although I still don't "drill through" most materials---why tempt fate???